Cord tensioner



FIG. 1 is a bottom perspective view of a cord tensioner showing the claimed design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a top perspective view thereof.

The dash-dash broken lines illustrate environmental structure and form no part of the claimed design.

Conventional contour lines and/or surface shading are illustrated for purposes of highlighting the solid-rendering, but form no part of the claimed design. 

CLAIM The ornamental design for a cord tensioner, as shown and described. 